Transmission not shifting properly, 2003 automatic, 3.8 liter v-6, fluid and filter new and clean. Sometimes if I rev the engine it will catch and drive fine, but it doesn't take off properly, it hesitates and gains no power

If the transmission was rebuilt 2 years ago the fluid and filter did not need to be changed. In a 1981 there are no trouble codes to retrieve so whoever suggested that is out to lunch, Unfortunatley you need to get the transmission rebuilt again, hopefully it gets done better this time. Using the dexron oil in Ford transmissions is something transmission shops do because they don't want to stock different fluids. While it's not likely that using dexron oil lead to the failure it would be better to use mercon or type F oil.

Depends on your engine.

1980 JEEP CJ-7 2.5L 4-cyl Engine Code [B]
CAPACITIES
Engine, GM without filter..........2.4 quarts[1]
Wix Filter ........ 51040
Cooling System, Initial Fill..........8.0 quarts
Automatic Transmission, A904, 30RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, A999, 32RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, Total Fill
3 speed A999, 32RH..........8.4 quarts
3 speed A904, 30RH..........7.0 quarts
Manual Transmission, 4-SPD, SR-4..........3.0 pints
Manual Transmission, 4-SPD, T176..........3.6 pints
Differential, Front..........2.5 pints[3]
Differential, Rear..........4.9 pints
Transfer Case,..........4.0 pints

1. Add extra oil when replacing filter. After refill check oil level.
2. With engine automatic transmission operating temperature, shift through all gears.
Check fluid level in NEUTRAL and add fluid as needed.
3. 1984-1992 Models with command-Track, add 5 oz of 75W-90 GL-5 to shift motor housing opening.

TORQUES
Oil Drain Plug.....25 ft-lbs
Manual Transmission T176
Fill Plug.....15 ft-lbs
Drain Plug.....15 ft-lbs
Manual Transmission SR4
Fill Plug.....20 ft-lbs

1980 JEEP CJ-7 4.2L 6-cyl Engine Code [C]
CAPACITIES
Engine, without filter..........5.0 quarts[1]
Wix Filter..... 51522
Cooling System, Initial Fill..........11.0 quarts
Automatic Transmission, A904, 30RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, A999, 32RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, Total Fill
3 speed A999, 32RH..........8.4 quarts
3 speed A904, 30RH..........7.0 quarts
Manual Transmission, 4-SPD, SR-4..........3.0 pints
Manual Transmission, 4-SPD, T176..........3.6 pints
Differential, Front..........2.5 pints[3]
Differential, Rear..........4.9 pints
Transfer Case,..........4.0 pints

1. Add extra oil when replacing filter. After refill check oil level.
2. With engine automatic transmission operating temperature, shift through all gears.
Check fluid level in NEUTRAL and add fluid as needed.
3. 1984-1992 Models with command-Track, add 5 oz of 75W-90 GL-5 to shift motor housing opening.

TORQUES
Oil Drain Plug.....30 ft-lbs
Manual Transmission T176
Fill Plug.....15 ft-lbs
Drain Plug.....15 ft-lbs
Manual Transmission SR4
Fill Plug.....20 ft-lbs

1980 JEEP CJ-7 5.0L 8-cyl Engine Code [H]
CAPACITIES
Engine, without filter..........4.0 quarts[1]
Wix Filter..... 51258
Cooling System, Initial Fill..........13.0 quarts
Automatic Transmission, A999, 32RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, A904, 30RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, Total Fill
3 speed A904, 30RH..........7.0 quarts
3 speed A999, 32RH..........8.4 quarts
Manual Transmission, 4-SPD, SR-4..........3.0 pints
Manual Transmission, 4-SPD, T176..........3.6 pints
Differential, Front..........2.5 pints[3]
Differential, Rear..........4.9 pints
Transfer Case,..........4.0 pints

1. Add extra oil when replacing filter. After refill check oil level.
2. With engine automatic transmission operating temperature, shift through all gears.
Check fluid level in NEUTRAL and add fluid as needed.
3. 1984-1992 Models with command-Track, add 5 oz of 75W-90 GL-5 to shift motor housing opening.

TORQUES
Manual Transmission T176
Fill Plug.....15 ft-lbs
Drain Plug.....15 ft-lbs
Manual Transmission SR4
Fill Plug.....20 ft-lbs

Oilman

Check trans fluid levels, if this is ok, could be a torque converter or valve body solenoids issue.

First check trans. fluid. It should be full, & clean. Clean means light red color fluid (like red cool-aid) if it looks like darker red, or brown fluid, like motor oil, that is way too dirty & should be flushed. May need to change the filter too. dirty trans. fluid is your big enemy. could also be an electrical problem in the trans like a shift solenoid or something like that, but check for clean fluid first.

YOUR TRANSMISSION SOUND LIKE LOW IN TRANSMISSION FLUID. YOU HAVE A FACTORY SEAL TRANSMISSION IF SLIPPING SHIFTING HARD TRANSMISSION COULD HAVE FLUID LEAK. YOUR TRANSMISSION DONT HAVE OIL FILLER TUBE AND DIP STICK.THE VOLKSWAGON DEALERSHIP HAS TO USE EQUIPMENT TO ADD FLUID THROUGH TRANSMISSION FILLER PLUG ON UPPER SIDE TRANSMISSION PAN. IF TRANSMISSION FLUID HAS NEVER BEEN CHANGED LET DEALERSHIP CHANGE TRANSMISSION FLUID AND FILTER AND TRY TO LOCATE LEAK IF FLUID WAS LOW. ALSO MAKE SURE ENGINE FINE TUNED AND TRANSMISSION SHIFT CABLE ADJUSTMENT IS CORRECT.

SOUND LIKE TRANSMISSION SLIPPING. CHECK TRANSMISSION FLUID LEVEL.IF FLUID LEVEL OKAY BUT FLUID LOOKS DARK SMELL BURNT.CHANGE TRANSMISSION FLUID AND FILTER ADD SOME VALVE BODY TREATMENT TO LOOSEN STICKEN SHIFT VALVES.ADD TO TRANSMISSION FLUID DONT OVER FILL TRANSMISSION WILL CAUSE OVERHEAT. IF TRANSMISSION FLUID GOOD FILTER ALREADY BEEN CHANGED.IF ALL GOOD ENGINE BEEN TUNED UP OTHER POSSIBLE CAUSES FOR TRANSMISSION SLIPPING NOT GOING TO OVER DRIVE COULD BE THROTTLE SHIFT CABLE OUT ADJUSTMENT OR STRETCHED. TORQUE CONVERTER FAULTY OR SHIFT VALVES TO TORQUE CONVERTER OR OVER DRIVE STUCK IN VALVE BODY. VALVE BODY FAULTY. AND HAVE VECHICLE SCANNED FOR FAULTY VECHICLE SPEED SENSOR OR FAULTY THROTTLE CONTROL MODULE OR FAULTY THROTTLE POSITION SENSOR. THEY WILL EFFECT TRANSMISSION SHIFT TO OVER DRIVE IF FAULTY.

2001 OLDSMOBILE ALERO 3.4L 6-cyl Engine Code [E]
2001 OLDSMOBILE ALERO 2.4L 4-cyl Engine Code [T]

Automatic Transmission,4T45-E......AF6
Automatic Transmission,4T40-E......AF6
Use Low Viscosity ATF, Hight Viscosity ATF or additives create fluid retention which cause the servos, solenoids to seize up causing shifting problems.

CAPACITIES:
Automatic Transmission, 4T45-E Initial Fill..........6.5 liters
Automatic Transmission, 4T40-E Initial Fill..........6.5 liters
Automatic Transmission, Total Fill
4 speed 4T45-E..........12.2 liters
4 speed 4T40-E..........12.2 liters

Good luck and hope this helps.

You didn't state what size engine you have.
The 2.2 engine----- 6.9 qts.
The 2.3 engine-----7.4 qts.
The 2.4 is 7.4 qts.
The 3.1 is 7.4 qts.
The 3.4 is 6.9 qts.
These are the capacities for refilling after being drained.

The fast idle valve is inside the throttle body. Sometimes it backs out and needs turned back in (it's threaded). This will cause the loping idle.

Get transmission filter changed with new fluid. Honda does not recommend transmission flushing.

replace the fluid in the transmission with the new DEXRON 6 fluid, it in many cases this new synthetic fluid solves this kind of problem, also replace the fluid filter while u are at it.